springboot+thymeleaf实现发Html邮件自由
2019年，我刚接触测试架构和测试开发类的工作时，经常会有自动化发邮件的功能，大都是从各个平台自动化统计一些数据出来，每周定时发一封邮件给领导交差，回过头来再看看我发的邮件，不美观，不专业。这2年，也有想过不要再费劲去拼样式+变量字符串了，但由于我打工仔繁忙的属性，一直拖到现在。这周项目有空闲时间，我研究了一下，弄了个模板出来，业务代码一套，就成了！！！！！
技术选型
springboot+thymeleaf
基础配置
配置
#application.properties
spring.mail.host=192.168.19.232
spring.mail.username=bug@hookweb.com.cn #发件人邮箱
spring.mail.password=emailqa #发件人邮箱授权码，不是密码，如果有些企业邮箱本身不存在授权，直接用密码试试
spring.mail.protocol=smtp
spring.mail.default-encoding=UTF-8
spring.mail.port=25
spring.thymeleaf.prefix=classpath:/templates/
POM依赖
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-thymeleafartifactId>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-mailartifactId>
<version>2.1.5.RELEASEversion>
dependency>
HTML邮箱模板
最炫酷，最自由的方式，HTML模板任意定制，直接从网上下载最方便
DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org" xmlns:background-color="http://www.w3.org/1999/xhtml">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="description" content="email code">
<meta name="viewport" content="width=device-width, initial-scale=1">
head>
<body>
<div style="background-color:#ECECEC; padding: 35px;">
<table cellpadding="0" align="center"
style="width: 800px;height: 100%; margin: 0px auto; text-align: left; position: relative; border-top-left-radius: 5px; border-top-right-radius: 5px; border-bottom-right-radius: 5px; border-bottom-left-radius: 5px; font-size: 14px; font-family:微软雅黑, 黑体; line-height: 1.5; box-shadow: rgb(153, 153, 153) 0px 0px 5px; border-collapse: collapse; background-position: initial initial; background-repeat: initial initial;background:#fff;">
<tbody>
<tr>
<th valign="middle"
style="height: 25px; line-height: 25px; padding: 15px 35px; border-bottom-width: 1px; border-bottom-style: solid; border-bottom-color: RGB(148,0,211); background-color: RGB(148,0,211); border-top-left-radius: 5px; border-top-right-radius: 5px; border-bottom-right-radius: 0px; border-bottom-left-radius: 0px;">
<font face="微软雅黑" size="5" style="color: rgb(255, 255, 255); " th:text="${content}">
font>
th>
tr>
<tr>
<td style="word-break:break-all">
<div style="padding:25px 35px 40px; background-color:#fff;opacity:0.8;">
<h2 style="margin: 5px 0px; ">
<font color="#333333" style="line-height: 20px; ">
<font style="line-height: 22px; " size="4">
尊敬的用户：font>
font>
h2>
<p >您好！感谢您使用****，您的账号正在进行邮箱验证，验证码为：<font color="#ff8c00">
<div th:object="${bodyEntity}">
<p th:text="*{recipienttype}">p>
<p th:text="*{address}">p>
div>
<p th:text="${code}">p>
font>，有效期30分钟，请尽快填写验证码完成验证！p><br>
<div style="width:100%;margin:0 auto;">
<div style="padding:10px 10px 0;border-top:1px solid #ccc;color:#747474;margin-bottom:20px;line-height:1.3em;font-size:12px;">
<p>****团队p>
<p>联系我们：********p>
<br>
<p>此为系统邮件，请勿回复<br>
Please do not reply to this system email
p>
div>
div>
div>
td>
tr>
tbody>
table>
div>
body>
html>
基础发邮件服务
package com.send.mail.services;
import java.util.Map;
public interface MailService {
void sendHtmlMailOne(String to, String subject, String content);
void sendHtmlMailMulti(String[] to, String subject, String content);
}
基础发邮件服务实现
package com.send.mail.services.impl;
import com.send.mail.services.MailService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.mail.javamail.MimeMessageHelper;
import org.springframework.stereotype.Service;
import javax.mail.MessagingException;
import javax.mail.internet.MimeMessage;
@Service
public class MailServiceImpl implements MailService {
@Value("${spring.mail.username}") //直接从配置文件获取username的值
private String from;
@Autowired
private JavaMailSender javaMailSender;
@Override
public void sendHtmlMailOne(String to, String subject, String content) {
try {
MimeMessage message = javaMailSender.createMimeMessage();
MimeMessageHelper helper = new MimeMessageHelper(message, true);
helper.setTo(to);//收件者
helper.setFrom(from);//发送者
helper.setSubject(subject);//主题
helper.setText(content, true);//第二个参数true表示邮件正文是HTML格式的，该参数不传默认为false。
javaMailSender.send(message);
} catch (MessagingException e) {
System.out.println("发送失败");
}
}
@Override
public void sendHtmlMailMulti(String[] to, String subject, String content) {
try {
MimeMessage message = javaMailSender.createMimeMessage();
MimeMessageHelper helper = new MimeMessageHelper(message, true);
helper.setTo(to);//收件者
helper.setFrom(from);//发送者
helper.setSubject(subject);//主题
helper.setText(content, true);//第二个参数true表示邮件正文是HTML格式的，该参数不传默认为false。
javaMailSender.send(message);
}catch (Exception e) {
e.printStackTrace();
}
}
}
使用JavaMailSender发送邮件
注入JavaMailSender（由Spring容器管理）
使用MimeMessageHelper消息助手，可自定义设置发件人、收件人、抄送人等邮件信息
动态值
变量值
package com.send.mail.util;
import org.springframework.stereotype.Service;
@Service
public class GetCode {
public String getCode() {
String str = "123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"; // no zero
StringBuilder code = new StringBuilder();
for (int i = 0; i < 6; i++) {
int index = (int) (Math.random() * str.length());
code.append(str.charAt(index));
}
return code.toString();
}
}
对象传给HTML解析
package com.send.mail.util;
public class BodyEntity {
private String recipienttype;
private String address;
public BodyEntity() {
}
public BodyEntity(String recipienttype, String address) {
this.recipienttype = recipienttype;
this.address = address;
}
public void setRecipienttype(String recipienttype) {
this.recipienttype = recipienttype;
}
public void setAddress(String address) {
this.address = address;
}
public String getRecipienttype() {
return recipienttype;
}
public String getAddress() {
return address;
}
}
controller解析发送邮件
package com.send.mail.controller;
import com.send.mail.services.impl.MailServiceImpl;
import com.send.mail.util.BodyEntity;
import com.send.mail.util.GetCode;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.*;
import org.thymeleaf.TemplateEngine;
import org.thymeleaf.context.Context;
import javax.mail.MessagingException;
import java.util.HashMap;
import java.util.Map;
@RestController
public class IndexController {
@Autowired
private MailServiceImpl mailService;
@Autowired
private TemplateEngine templateEngine;
@Autowired
private GetCode getCode;
@GetMapping("/sendmail/{to}")
public String sendmail(@PathVariable String to) throws MessagingException {
//Thymeleaf提供了TemplateEngine来对模板进行渲染，通过Context构造模板中变量需要的值
Context context = new Context();
context.setVariable("title", "自定义的HTML内容标题");//设置templates模板里的title变量值
context.setVariable("content","自定义的HTML内容标题");
String mail = templateEngine.process("index.html", context);
mailService.sendHtmlMailOne(to, "邮件标题", mail);
return "sucess";
}
@GetMapping("/sendmailm/{to}")
public String sendmailm(@PathVariable String[] to) throws MessagingException {
//Thymeleaf提供了TemplateEngine来对模板进行渲染，通过Context构造模板中变量需要的值
BodyEntity bodyEntity=new BodyEntity();
bodyEntity.setRecipienttype("recipient's");
bodyEntity.setAddress("[email protected]");
Context context = new Context();
context.setVariable("title", "自定义的HTML内容标题");//设置templates模板里的title变量值
context.setVariable("content","自定义的HTML内容标题");
context.setVariable("code",getCode.getCode());
context.setVariable("bodyEntity",bodyEntity);
String mail = templateEngine.process("index.html", context);
mailService.sendHtmlMailMulti(to, "邮件标题", mail);
return "sucess";
}
}
接口请求
